NO their eye will dry out!
Once post mortem, muscles that control the eyelid often flex and open the eye, regardless of how the person died.
yes
yes
they can sleep long with one eye open -they'll drown if both are closed also their eye is open to sense danger or they'll die.
I believe a shark sleeps with one eye open.
It means you have one eye open. If you mean the idiom "sleep with one eye open," it means that you are staying alert at all times in case of disaster.
goldfish sleep with their eye open their eye are open all the time. Gold fish sleep with there eyes open...But they have a clear lid that over laps there eyes in which they see out of so there eyes are closed they just have a different lid then humans. Hope that helps you:)
Sleep with one eye open
every dolphin sleeps with one eye open.
You have the alternate episodes of REM and NREM types of sleep. REM sleep is characterized by rapid eye moment type of sleep. You can easily spot that the person is moving his eye ball and flickers the eye lids. The electroencephalogram of the patient is specific for REM and NREM sleep.
Giraffes don't sleep with one eye open. There's no point in keeping an eye open unless there's a brain awake to interpret what the eye is seeing. And the only animals considered to be able to sleep with half the brain at a time are whales and Dolphins.
At night dolphins will sleep with one eye open close to the surface so that they can breathe when they need oxygen. They leave one eye open so that they can look out for danger while they rest one half of their brain. During the night they will alternate which eye they have open.